More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25
Earth is the only planet in our solar system that's not named after a god or goddess.
17
In 1963, the US Military created an artificial ring around Earth, similar to that of the planet Saturn. The ring was made of copper needles and was used for worldwide communications in the case that the Soviets disabled all other methods of communication.
26
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
There are approximately three chickens for every human on Earth.
13